<div class="xm-back-top" (click)="clickBackTo()" *ngIf="visible" @fadeShow>
  <ng-template #defTpl>
    <div class="content">
      <div class="icon"></div>
    </div>
  </ng-template>
  <ng-container *ngTemplateOutlet="tpl || defTpl"></ng-container>
</div>
